So i've been bumbling my way through my problem sheet for this week and the last part of the problem needs me to expand a couple of brackets, for the life of me I can't remember how!
I need to expand

I'm reasonably confident i could do the expansion for -2 if someone asked me but those brackets are messing me up.
The final answer (after ignoring higher order terms) should only have something containing a term

(Original post by radiator0505)
So i've been bumbling my way through my problem sheet for this week and the last part of the problem needs me to expand a couple of brackets, for the life of me I can't remember how!
I need to expand

I'm reasonably confident i could do the expansion for -2 if someone asked me but those brackets are messing me up.
The final answer (after ignoring higher order terms) should only have something containing a term